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SE8003854L - DRIVE DEVICE FOR A DISC PLAYER IN A VIDEO DISC PLAYER - Google Patents

DRIVE DEVICE FOR A DISC PLAYER IN A VIDEO DISC PLAYER

Info

Publication number
SE8003854L
SE8003854L SE8003854A SE8003854A SE8003854L SE 8003854 L SE8003854 L SE 8003854L SE 8003854 A SE8003854 A SE 8003854A SE 8003854 A SE8003854 A SE 8003854A SE 8003854 L SE8003854 L SE 8003854L
Authority
SE
Sweden
Prior art keywords
disc player
turntable
magnetic flux
flange
secured
Prior art date
Application number
SE8003854A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
G D Pyles
Original Assignee
Rca Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rca Corp filed Critical Rca Corp
Publication of SE8003854L publication Critical patent/SE8003854L/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/26—Asynchronous induction motors having rotors or stators designed to permit synchronous operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rotational Drive Of Disk (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Diaphragms For Cameras (AREA)

Abstract

A turntable drive motor comprises a stator having a core defining an airgap for receiving a rotor, and a field winding for establishing an alternating magnetic flux of a given frequency therein. An elastic belt is disposed about a pully mounted on the rotor shaft and a flange secured to the turntable. A ring having a plurality of permanently magnetized poles of alternate polarity along its periphery is attached to the flange. A pair of elements are secured to the core for diverting a portion of the stator magnetic flux to a region adjacent to the ringed magnets. The relationship between the excitation frequency and the number of the permanently magnetized poles is such that deviations in the rate of rotation of the turntable for a desired rotational rate are opposed.
SE8003854A 1979-05-29 1980-05-22 DRIVE DEVICE FOR A DISC PLAYER IN A VIDEO DISC PLAYER SE8003854L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/042,919 US4239237A (en) 1979-05-29 1979-05-29 Turntable drive system for video disc player

Publications (1)

Publication Number Publication Date
SE8003854L true SE8003854L (en) 1980-11-30

Family

ID=21924455

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8003854A SE8003854L (en) 1979-05-29 1980-05-22 DRIVE DEVICE FOR A DISC PLAYER IN A VIDEO DISC PLAYER

Country Status (17)

Country Link
US (1) US4239237A (en)
JP (1) JPS5611659A (en)
AR (1) AR227150A1 (en)
AT (1) AT371612B (en)
AU (1) AU532885B2 (en)
BR (1) BR8003258A (en)
DE (1) DE3020490C2 (en)
DK (1) DK230680A (en)
ES (1) ES491927A0 (en)
FI (1) FI801662A7 (en)
FR (1) FR2458129A1 (en)
GB (1) GB2052885B (en)
IT (1) IT1130726B (en)
NL (1) NL8003085A (en)
NO (1) NO801584L (en)
PL (1) PL224560A1 (en)
SE (1) SE8003854L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417332A (en) * 1981-06-15 1983-11-22 Rca Corporation Turntable speed control
JPH05101527A (en) * 1991-10-07 1993-04-23 Chuo Denki Kk Disk reproducing device
US20080194187A1 (en) * 2007-02-08 2008-08-14 Alto U.S. Inc. Elastic drive belt assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445117A (en) * 1967-08-07 1969-05-20 Henry V Zakrzewski Phonograph drive
NL6910467A (en) * 1968-07-17 1970-01-20
US3848146A (en) * 1972-03-31 1974-11-12 Rca Corp Ac motor
US3912283A (en) * 1974-09-10 1975-10-14 Rca Corp Turntable speed lock system
US4072874A (en) * 1975-10-14 1978-02-07 Kollmorgen Technologies Corporation Direct drive for turntables
GB1580883A (en) * 1976-08-09 1980-12-10 Rca Corp Speed control system for a turntable

Also Published As

Publication number Publication date
GB2052885B (en) 1983-07-27
DK230680A (en) 1980-11-30
US4239237A (en) 1980-12-16
GB2052885A (en) 1981-01-28
DE3020490C2 (en) 1982-10-14
NO801584L (en) 1980-12-01
JPS5611659A (en) 1981-02-05
NL8003085A (en) 1980-12-02
AR227150A1 (en) 1982-09-30
BR8003258A (en) 1980-12-30
PL224560A1 (en) 1981-02-27
ES8103428A1 (en) 1981-02-16
AU5867580A (en) 1980-12-04
ATA286380A (en) 1982-11-15
AT371612B (en) 1983-07-11
ES491927A0 (en) 1981-02-16
FR2458129A1 (en) 1980-12-26
AU532885B2 (en) 1983-10-20
IT8022271A0 (en) 1980-05-22
IT1130726B (en) 1986-06-18
FI801662A7 (en) 1980-11-30
DE3020490A1 (en) 1980-12-18

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Legal Events

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NAV Patent application has lapsed

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